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Registro completo
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Biblioteca (s) : |
INIA Treinta y Tres. |
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Fecha : |
23/01/2023 |
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Actualizado : |
07/03/2023 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Autor : |
CARRACELAS, G.; GUILPART, N.; CASSMAN, K.G.; GRASSINI, P. |
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Afiliación : |
JULIO GONZALO CARRACELAS GARRIDO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; NICOLÁS GUILPART, University of Nebraska-Lincoln, USA; Université Paris-Saclay, AgroParisTech, INRAE, UMR Agronomie, France.; KENNETH G. CASSMAN, University of Nebraska-Lincoln, USA; PATRICIO GRASSINI, University of Nebraska-Lincoln, USA. |
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Título : |
Distinguishing between yield plateaus and yield ceilings: A case study of rice in Uruguay. |
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Fecha de publicación : |
2023 |
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Fuente / Imprenta : |
Field Crops Research, 2023, volume 292, number 108808. OPEN ACCESS. Doi: https://doi.org/10.1016/j.fcr.2023.108808 |
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Páginas : |
8 p. |
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DOI : |
10.1016/j.fcr.2023.108808 |
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Idioma : |
Inglés |
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Notas : |
Article history: Received 3 September 2022; Received in revised form 22 December 2022; Accepted 2 January 2023; Available online 13 January 2023.
Corresponding author. E-mail address: gcarracelas@inia.org.uy (G. Carracelas). |
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Contenido : |
Rice yields in Uruguay have increased rapidly (159 kg-1 ha-1 y-1) between 1990 and 2013. There is evidence, however, of an incipient yield plateau in recent years. The aim of this study was to determine if the recent slowdown in yield gains is because average yield (Ya) has approached the yield potential (Yp) ceiling, which makes it increasingly difficult for farmers to sustain further yield gains. We followed the methodology developed by the Global Yield Gap Atlas to estimate Yp and associated yield gaps for irrigated rice supported by data from high-yield experiments to calibrate the rice simulation model Oryza (v3). Subsequently, the model was used to simulate Yp using long-term daily weather data from seven locations, representing 90 % of total rice area in Uruguay. The exploitable yield gap (Yeg) was calculated as the difference between 80 % of Yp and Ya. Estimated national average Yp was 13.9 Mg ha?1, with relatively small variation across sites, from 13.1 to 15.1 Mg ha-1. Average Ya was 8.3 Mg ha-1, ranging from 7.9 to 8.5 Mg ha-1 across sites, and representing 60 % of Yp. Our analysis suggests there is still room to further increase rice yields in Uruguay, because the Yeg is 2.8 Mg ha-1, which means the current yield plateau is not due to Ya approaching Yp, as has occurred in other high-yield irrigated rice systems in China and California, USA. The approach followed here can help determine whether yield plateaus are occurring due to a small Yeg or other factors. |
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Palabras claves : |
ORYSA SATIVA; RICE; YIELD GAP; YIELD PLATEAU; YIELD POTENTIAL. |
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Asunto categoría : |
F01 Cultivo |
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URL : |
https://www.sciencedirect.com/sdfe/reader/pii/S0378429023000011/pdf
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Marc : |
LEADER 02481naa a2200253 a 4500
001 1063945
005 2023-03-07
008 2023 bl uuuu u00u1 u #d
024 7 $a10.1016/j.fcr.2023.108808$2DOI
100 1 $aCARRACELAS, G.
245 $aDistinguishing between yield plateaus and yield ceilings$bA case study of rice in Uruguay.$h[electronic resource]
260 $c2023
300 $a8 p.
500 $aArticle history: Received 3 September 2022; Received in revised form 22 December 2022; Accepted 2 January 2023; Available online 13 January 2023. Corresponding author. E-mail address: gcarracelas@inia.org.uy (G. Carracelas).
520 $aRice yields in Uruguay have increased rapidly (159 kg-1 ha-1 y-1) between 1990 and 2013. There is evidence, however, of an incipient yield plateau in recent years. The aim of this study was to determine if the recent slowdown in yield gains is because average yield (Ya) has approached the yield potential (Yp) ceiling, which makes it increasingly difficult for farmers to sustain further yield gains. We followed the methodology developed by the Global Yield Gap Atlas to estimate Yp and associated yield gaps for irrigated rice supported by data from high-yield experiments to calibrate the rice simulation model Oryza (v3). Subsequently, the model was used to simulate Yp using long-term daily weather data from seven locations, representing 90 % of total rice area in Uruguay. The exploitable yield gap (Yeg) was calculated as the difference between 80 % of Yp and Ya. Estimated national average Yp was 13.9 Mg ha?1, with relatively small variation across sites, from 13.1 to 15.1 Mg ha-1. Average Ya was 8.3 Mg ha-1, ranging from 7.9 to 8.5 Mg ha-1 across sites, and representing 60 % of Yp. Our analysis suggests there is still room to further increase rice yields in Uruguay, because the Yeg is 2.8 Mg ha-1, which means the current yield plateau is not due to Ya approaching Yp, as has occurred in other high-yield irrigated rice systems in China and California, USA. The approach followed here can help determine whether yield plateaus are occurring due to a small Yeg or other factors.
653 $aORYSA SATIVA
653 $aRICE
653 $aYIELD GAP
653 $aYIELD PLATEAU
653 $aYIELD POTENTIAL
700 1 $aGUILPART, N.
700 1 $aCASSMAN, K.G.
700 1 $aGRASSINI, P.
773 $tField Crops Research, 2023, volume 292, number 108808. OPEN ACCESS. Doi: https://doi.org/10.1016/j.fcr.2023.108808
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Registro original : |
INIA Treinta y Tres (TT) |
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Registro completo
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Biblioteca (s) : |
INIA Las Brujas. |
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Fecha actual : |
10/03/2021 |
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Actualizado : |
14/06/2021 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Circulación / Nivel : |
Internacional - -- |
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Autor : |
NASCIMENTO, D. C.; DINI, M.; CARPENEDO, S.; RASEIRA, M. DO C. B. |
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Afiliación : |
D. C. NASCIMENTO, Postgraduate Program in Agronomy (PPGA), Faculty of Agronomy "Eliseu Maciel", Federal University of Pelotas (FAEM-UFPel), Pelotas (RS), Brazil; MAXIMILIANO ANTONIO DINI VIÑOLY, Postgraduate Program in Agronomy (PPGA), Faculty of Agronomy "Eliseu Maciel", Federal University of Pelotas (FAEM-UFPel), Pelotas (RS), Brazil; S. CARPENEDO, Laboratory of Fruit Breeding, Embrapa Temperate Agriculture Pelotas (RS), Brazil; M. C. B. RASEIRA, Laboratory of Fruit Breeding, Embrapa Temperate Agriculture Pelotas (RS), Brazil. |
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Título : |
Germination and development of 'Precocinho' peach embryos: asepsis and use of PPM tm in culture medium. |
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Fecha de publicación : |
2018 |
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Fuente / Imprenta : |
Journal of Experimental Agriculture International, 2018, v. 22, n. 6, p. 1-7. Article no.JEAI.41065. Doi: https://doi.org/10.9734/JEAI/2018/41065 |
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ISSN : |
2457-0591 |
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DOI : |
10.9734/JEAI/2018/41065 |
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Idioma : |
Inglés |
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Notas : |
Article history: Received 19 February 2018; Accepted 27 April 2018; Published 2 May 2018.
Article information: Editor(s): (1) Biljana Bojovic, Assistant Professor, Faculty of Science, Institute of Biology and Ecology, University of Kragujevac, Republic of Serbia.
Reviewers: (1) Zeynel Dalkiliç, College of Agriculture, Adnan Menderes University, Turkey. (2) Nebi Bilir, Suleyman Demirel University, Turkey. (3) Martin Potgieter, University of Limpopo, South Africa. Complete Peer review History: http://www.sciencedomain.org/review-history/24416 |
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Contenido : |
ABSTRACT.
Embryo culture is a technique used to rescue immature embryos which would not germinate under natural conditions. However, one of the biggest problems of this process is the contamination by microorganisms. The objective of this work was to test asepsis methods and the use of PPMTM (Plant Preservative MixtureTM) in the culture medium for the germination and development of 'Precocinho' peach embryos. After extraction from the fruits, seeds were submitted to treatments with thimerosal, sodium hypochlorite (NaClO), flame sterilization and moxifloxacin hydrochloride, in culture medium with and without addition of PPMTM, totaling nine treatments. The experimental design was completely randomized, with 20 replicates per treatment. Three evaluations were performed: in vitro establishment (at 55 days of cultivation), embryo development (at 65 days of cultivation) and acclimatization (20 days after transplanting in the greenhouse). Six treatments did not had any contamination, on the first evaluation. However, 65 days after culture, the NaClO with PPMTM addition presented the best results for the variables analyzed. The average seedling survival was 81.6%, after acclimatization. The use of sodium hypochlorite with the addition of PPMTM is shown as the most efficient treatment, among the tested ones, for the germination and development of 'Precocinho' peach embryos. |
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Palabras claves : |
Disinfestation; Embryo culture; Immature embryos. |
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Thesagro : |
PRUNUS PERSICA (L.). |
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Asunto categoría : |
F01 Cultivo |
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URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/15317/1/Nascimento-et-al.-2018.-Germination-and-Development-of-Precocinho-Peach-JEAI.pdf
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Marc : |
LEADER 02746naa a2200241 a 4500
001 1061812
005 2021-06-14
008 2018 bl uuuu u00u1 u #d
022 $a2457-0591
024 7 $a10.9734/JEAI/2018/41065$2DOI
100 1 $aNASCIMENTO, D. C.
245 $aGermination and development of 'Precocinho' peach embryos$basepsis and use of PPM tm in culture medium.$h[electronic resource]
260 $c2018
500 $aArticle history: Received 19 February 2018; Accepted 27 April 2018; Published 2 May 2018. Article information: Editor(s): (1) Biljana Bojovic, Assistant Professor, Faculty of Science, Institute of Biology and Ecology, University of Kragujevac, Republic of Serbia. Reviewers: (1) Zeynel Dalkiliç, College of Agriculture, Adnan Menderes University, Turkey. (2) Nebi Bilir, Suleyman Demirel University, Turkey. (3) Martin Potgieter, University of Limpopo, South Africa. Complete Peer review History: http://www.sciencedomain.org/review-history/24416
520 $aABSTRACT. Embryo culture is a technique used to rescue immature embryos which would not germinate under natural conditions. However, one of the biggest problems of this process is the contamination by microorganisms. The objective of this work was to test asepsis methods and the use of PPMTM (Plant Preservative MixtureTM) in the culture medium for the germination and development of 'Precocinho' peach embryos. After extraction from the fruits, seeds were submitted to treatments with thimerosal, sodium hypochlorite (NaClO), flame sterilization and moxifloxacin hydrochloride, in culture medium with and without addition of PPMTM, totaling nine treatments. The experimental design was completely randomized, with 20 replicates per treatment. Three evaluations were performed: in vitro establishment (at 55 days of cultivation), embryo development (at 65 days of cultivation) and acclimatization (20 days after transplanting in the greenhouse). Six treatments did not had any contamination, on the first evaluation. However, 65 days after culture, the NaClO with PPMTM addition presented the best results for the variables analyzed. The average seedling survival was 81.6%, after acclimatization. The use of sodium hypochlorite with the addition of PPMTM is shown as the most efficient treatment, among the tested ones, for the germination and development of 'Precocinho' peach embryos.
650 $aPRUNUS PERSICA (L.)
653 $aDisinfestation
653 $aEmbryo culture
653 $aImmature embryos
700 1 $aDINI, M.
700 1 $aCARPENEDO, S.
700 1 $aRASEIRA, M. DO C. B.
773 $tJournal of Experimental Agriculture International, 2018$gv. 22, n. 6, p. 1-7. Article no.JEAI.41065. Doi: https://doi.org/10.9734/JEAI/2018/41065
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